{"results":[{"id":"arxiv_2504.09673","title":"Earthquake Simulation","authors":[{"name":"Palak Chawla"}],"abstract":"This paper presents a seismic activity simulator that models the effects of fault lines on surface pressure. This project uses C programming to create a fully interactive learning resource intended to educate users on the mechanics of earthquakes. The motivation behind this project is to make studying seismic activity more accessible, engaging and cost effective.","source":"arXiv","year":2025,"language":"en","subjects":["cs.CE"],"url":"https://arxiv.org/abs/2504.09673","pdf_url":"https://arxiv.org/pdf/2504.09673","is_open_access":true,"published_at":"2025-04-13T17:54:25Z","score":69},{"id":"doaj_10.46298/jtcam.15198","title":"How to introduce an initial crack in phase field simulations to accurately predict the linear elastic fracture propagation threshold?","authors":[{"name":"Flavien Loiseau"},{"name":"Veronique Lazarus"}],"abstract":"Variational phase field fracture models are now widely used to simulate crack propagation in structures. A critical aspect of these simulations is the correct determination of the propagation threshold of pre-existing cracks, as it highly relies on how the initial cracks are implemented. While prior studies briefly discuss initial crack implementation techniques, we present here a systematic investigation. Various techniques to introduce initial cracks in phase field fracture simulations are tested, from the crack explicit meshing to the replacement by a fully damaged phase field, including different variants for the boundary conditions. Our focus here is on phase field models aiming to approximate, in the $\\Gamma$-convergence limit, Griffith quasi-static propagation in the framework of Linear Elastic Fracture Mechanics. Therefore, a sharp crack model from classic linear elastic fracture mechanics based on Griffith criterion is the reference in this work. To assess the different techniques to introduce initial cracks, we rely on path-following methods to compute the sharp crack and the phase field smeared crack solutions. The underlying idea is that path-following ensures staying at equilibrium at each instant so that any difference between phase field and sharp crack models can be attributed to numerical artifacts. Thus, by comparing the results from both models, we can provide practical recommendations for reliably incorporating initial cracks in phase field fracture simulations. The comparison shows that an improper initial crack implementation often requires the smeared crack to transition to a one-element-wide phase band to adequately represent a displacement jump along a crack. This transition increases the energy required to propagate the crack, leading to a significant overshoot in the force-displacement response. The take-home message is that to predict the propagation threshold accurately and avoid artificial toughening; the crack must be initialized either setting the phase field to its damage state over a one-element-wide band or meshing the crack explicitly as a one-element-wide slit and imposing the fully cracked state on the crack surface.","source":"DOAJ","year":2025,"language":"","subjects":["Mechanics of engineering. Applied mechanics"],"doi":"10.46298/jtcam.15198","url":"https://jtcam.episciences.org/15198/pdf","pdf_url":"https://jtcam.episciences.org/15198/pdf","is_open_access":true,"published_at":"","score":69},{"id":"doaj_10.46298/jtcam.14449","title":"Expressing general constitutive models in FEniCSx using external operators and algorithmic automatic differentiation","authors":[{"name":"Andrey Latyshev"},{"name":"Jérémy Bleyer"},{"name":"Corrado Maurini"},{"name":"Jack Hale"}],"abstract":"Many problems in solid mechanics involve general and non-trivial constitutive models that are difficult to express in variational form. Consequently, it can be challenging to define these problems in automated finite element solvers, such as the FEniCS Project, that use domain-specific languages specifically designed for writing variational forms. In this article, we describe a methodology and software framework for FEniCSx / DOLFINx that enables the expression of constitutive models in nearly any general programming language. We demonstrate our approach on two solid mechanics problems; the first is a simple von Mises elastoplastic model with isotropic hardening implemented with Numba, and the second a Mohr-Coulomb elastoplastic model with apex smoothing implemented with JAX. In the latter case we show that by leveraging JAX's algorithmic automatic differentiation transformations we can avoid error-prone manual differentiation of the terms necessary to resolve the constitutive model. We show extensive numerical results, including Taylor remainder testing, that verify the correctness of our implementation. The software framework and fully documented examples are available as supplementary material under the LGPLv3 or later license.","source":"DOAJ","year":2025,"language":"","subjects":["Mechanics of engineering. Applied mechanics"],"doi":"10.46298/jtcam.14449","url":"https://jtcam.episciences.org/14449/pdf","pdf_url":"https://jtcam.episciences.org/14449/pdf","is_open_access":true,"published_at":"","score":69},{"id":"crossref_10.7717/peerj-cs.3231","title":"CE-Prompt: enhance prompt expression stability by multiple understanding","authors":[{"name":"Wujian Yang"},{"name":"Chunxu Jin"},{"name":"Guanlin Chen"},{"name":"Haotian Jin"}],"abstract":"In this article, we propose CE-Prompt, an enhanced version of Prompt-Tuning designed to address issues such as the instability of random initialization and inefficiencies caused by long text in pre-trained large language models (LLMs). Inspired by the multi-head attention mechanism, CE-Prompt introduces the concept of composite embedding, which utilizes multiple randomly initialized embedding layers to generate more expressive prompt representations. To effectively integrate the information expressed by these composite embeddings, an additive fusion approach is employed, allowing each prompt vector to capture task-specific information more comprehensively, thereby improving the model’s task adaptability and inference efficiency. Experimental results show that CE-Prompt outperforms traditional Prompt-Tuning methods, with average improvements of 0.82% in Bilingual Evaluation Understudy (BLEU)-4 and 0.65% in ROUGE-L. Additionally, time complexity analysis indicates that CE-Prompt significantly reduces computational costs during inference. Compared to other methods, it achieves higher efficiency with the same training parameter budget, providing a more efficient solution for practical deployment.","source":"CrossRef","year":2025,"language":"en","subjects":null,"doi":"10.7717/peerj-cs.3231","url":"https://doi.org/10.7717/peerj-cs.3231","pdf_url":"https://peerj.com/articles/cs-3231.pdf","is_open_access":true,"published_at":"","score":69},{"id":"arxiv_2307.06960","title":"On stepwise advancement of fractures and pressure oscillations in saturated porous media","authors":[{"name":"Carlo Peruzzo"},{"name":"Luciano Simoni"},{"name":"Bernhard Schrefler"}],"abstract":"Comments to K.M. Pervaiz Fathima, René de Borst, Implications of single or multiple pressure degrees of freedom at fracture in fluid saturated porous media, Engineering Fracture Mechanics, 213 (2019), 1-20.","source":"arXiv","year":2023,"language":"en","subjects":["cs.CE"],"url":"https://arxiv.org/abs/2307.06960","pdf_url":"https://arxiv.org/pdf/2307.06960","is_open_access":true,"published_at":"2023-07-13T04:30:59Z","score":67},{"id":"arxiv_2108.05348","title":"Notes on Perfectly Matched Layers (PMLs)","authors":[{"name":"Steven G. Johnson"}],"abstract":"This note is intended as a brief introduction to the theory and practice of perfectly matched layer (PML) absorbing boundaries for wave equations, originally developed for MIT courses 18.369 and 18.336. It focuses on the complex stretched-coordinate viewpoint, and also discusses the limitations of PML.","source":"arXiv","year":2021,"language":"en","subjects":["cs.CE","physics.comp-ph"],"url":"https://arxiv.org/abs/2108.05348","pdf_url":"https://arxiv.org/pdf/2108.05348","is_open_access":true,"published_at":"2021-08-04T14:07:13Z","score":65},{"id":"arxiv_2007.00865","title":"System inference for the spatio-temporal evolution of infectious diseases: Michigan in the time of COVID-19","authors":[{"name":"Zhenlin Wang"},{"name":"Xiaoxuan Zhang"},{"name":"Gregory Teichert"},{"name":"Mariana Carrasco-Teja"},{"name":"Krishna Garikipati"}],"abstract":"We extend the classical SIR model of infectious disease spread to account for time dependence in the parameters, which also include diffusivities. The temporal dependence accounts for the changing characteristics of testing, quarantine and treatment protocols, while diffusivity incorporates a mobile population. This model has been applied to data on the evolution of the COVID-19 pandemic in the US state of Michigan. For system inference, we use recent advances; specifically our framework for Variational System Identification (Wang et al., Comp. Meth. App. Mech. Eng., 356, 44-74, 2019; arXiv:2001.04816 [cs.CE]) as well as Bayesian machine learning methods.","source":"arXiv","year":2020,"language":"en","subjects":["q-bio.PE"],"url":"https://arxiv.org/abs/2007.00865","pdf_url":"https://arxiv.org/pdf/2007.00865","is_open_access":true,"published_at":"2020-07-02T04:17:30Z","score":64},{"id":"arxiv_1907.10151","title":"Calculating phase diagrams with ATAT","authors":[{"name":"Martin Bäker"}],"abstract":"This document is a short and informal tutorial on some aspects of calculating phase diagrams with the ATAT-tools emc2 and phb and on creating cluster expansions with maps. It is neither complete, nor in any way an official document, but mainly a set of collected notes I took during experimentation with ATAT.","source":"arXiv","year":2019,"language":"en","subjects":["cs.CE","cond-mat.mtrl-sci"],"url":"https://arxiv.org/abs/1907.10151","pdf_url":"https://arxiv.org/pdf/1907.10151","is_open_access":true,"published_at":"2019-07-22T13:01:54Z","score":63},{"id":"crossref_10.4236/ce.2015.68080","title":"Academic Diversity and Assessment Process for CS Program Accreditation","authors":[{"name":"Arif Bhatti"},{"name":"Irfan Ahmed"}],"abstract":"","source":"CrossRef","year":2015,"language":"en","subjects":null,"doi":"10.4236/ce.2015.68080","url":"https://doi.org/10.4236/ce.2015.68080","pdf_url":"https://www.scirp.org/journal/paperinformation?paperid=56501","is_open_access":true,"citations":1,"published_at":"","score":59.03},{"id":"arxiv_1502.01119","title":"A discontinuous Galerkin method for cohesive zone modelling","authors":[{"name":"Peter Hansbo"},{"name":"Kent Salomonsson"}],"abstract":"We propose a discontinuous finite element method for small strain elasticity allowing for cohesive zone modeling. The method yields a seamless transition between the discontinuous Galerkin method and classical cohesive zone modeling. Some relevant numerical examples are presented.","source":"arXiv","year":2015,"language":"en","subjects":["cs.CE","math.NA"],"url":"https://arxiv.org/abs/1502.01119","pdf_url":"https://arxiv.org/pdf/1502.01119","is_open_access":true,"published_at":"2015-02-04T08:24:04Z","score":59},{"id":"crossref_10.1109/tns.2013.2282818","title":"Scintillation Properties of Cs$_{3}$LaCl$_{6}$:Ce$^{3+}$ and Cs$_{3}$LaBr$_{6}$:Ce$^{3+}$","authors":[{"name":"Hua Wei"},{"name":"Mariya Zhuravleva"},{"name":"Mohit Tyagi"},{"name":"Charles L. Melcher"}],"abstract":"","source":"CrossRef","year":2014,"language":"en","subjects":null,"doi":"10.1109/tns.2013.2282818","url":"https://doi.org/10.1109/tns.2013.2282818","is_open_access":true,"citations":18,"published_at":"","score":58.54},{"id":"arxiv_1404.7550","title":"The Synchrosqueezing transform for instantaneous spectral analysis","authors":[{"name":"Gaurav Thakur"}],"abstract":"The Synchrosqueezing transform is a time-frequency analysis method that can decompose complex signals into time-varying oscillatory components. It is a form of time-frequency reassignment that is both sparse and invertible, allowing for the recovery of the signal. This article presents an overview of the theory and stability properties of Synchrosqueezing, as well as applications of the technique to topics in cardiology, climate science and economics.","source":"arXiv","year":2014,"language":"en","subjects":["cs.CE","math.NA"],"url":"https://arxiv.org/abs/1404.7550","pdf_url":"https://arxiv.org/pdf/1404.7550","is_open_access":true,"published_at":"2014-04-29T22:31:21Z","score":58},{"id":"arxiv_1410.1233","title":"EnKF-C user guide","authors":[{"name":"Pavel Sakov"}],"abstract":"EnKF-C provides a compact generic framework for off-line data assimilation into large-scale layered geophysical models with the ensemble Kalman filter (EnKF). It is coded in C for GNU/Linux platform and can work either in EnKF, ensemble optimal interpolation (EnOI), or hybrid (EnKF/EnOI) modes.","source":"arXiv","year":2014,"language":"en","subjects":["cs.CE"],"url":"https://arxiv.org/abs/1410.1233","pdf_url":"https://arxiv.org/pdf/1410.1233","is_open_access":true,"published_at":"2014-10-06T01:29:42Z","score":58},{"id":"crossref_10.1007/s11144-013-0549-2","title":"Dehydrogenation of ethylbenzene over Fe–Ce–Rb and Fe–Ce–Cs mixed oxide catalysts","authors":[{"name":"Yusuke Kano"},{"name":"Masa–aki Ohshima"},{"name":"Hideki Kurokawa"},{"name":"Hiroshi Miura"}],"abstract":"","source":"CrossRef","year":2013,"language":"en","subjects":null,"doi":"10.1007/s11144-013-0549-2","url":"https://doi.org/10.1007/s11144-013-0549-2","pdf_url":"http://link.springer.com/content/pdf/10.1007/s11144-013-0549-2.pdf","is_open_access":true,"citations":14,"published_at":"","score":57.42},{"id":"arxiv_1303.2223","title":"khmer: Working with Big Data in Bioinformatics","authors":[{"name":"Eric McDonald"},{"name":"C. Titus Brown"}],"abstract":"We introduce design and optimization considerations for the 'khmer' package.","source":"arXiv","year":2013,"language":"en","subjects":["cs.CE","q-bio.GN"],"url":"https://arxiv.org/abs/1303.2223","pdf_url":"https://arxiv.org/pdf/1303.2223","is_open_access":true,"published_at":"2013-03-09T15:34:25Z","score":57},{"id":"arxiv_1302.4391","title":"Constructing a genome assembly that has the maximum likelihood","authors":[{"name":"Mohammadreza Ghodsi"}],"abstract":"We formulate genome assembly problem as an optimization problem in which the objective function is the likelihood of the assembly given the reads.","source":"arXiv","year":2013,"language":"en","subjects":["cs.CE","cs.DS"],"url":"https://arxiv.org/abs/1302.4391","pdf_url":"https://arxiv.org/pdf/1302.4391","is_open_access":true,"published_at":"2013-02-18T19:14:38Z","score":57},{"id":"arxiv_1305.1112","title":"json2run: a tool for experiment design \u0026 analysis","authors":[{"name":"Tommaso Urli"}],"abstract":"json2run is a tool to automate the running, storage and analysis of experiments. The main advantage of json2run is that it allows to describe a set of experiments concisely as a JSON-formatted parameter tree. It also supports parallel execution of experiments, automatic parameter tuning through the F-Race framework and storage and analysis of experiments with MongoDB and R.","source":"arXiv","year":2013,"language":"en","subjects":["cs.CE"],"url":"https://arxiv.org/abs/1305.1112","pdf_url":"https://arxiv.org/pdf/1305.1112","is_open_access":true,"published_at":"2013-05-06T08:31:48Z","score":57},{"id":"arxiv_1306.2843","title":"On Some Recent Insights in Integral Biomathics","authors":[{"name":"Plamen L. Simeonov"}],"abstract":"This paper summarizes the results in Integral Biomathics obtained to this moment and provides an outlook for future research in the field.","source":"arXiv","year":2013,"language":"en","subjects":["cs.CE"],"doi":"10.1016/j.pbiomolbio.2013.06.001","url":"https://arxiv.org/abs/1306.2843","pdf_url":"https://arxiv.org/pdf/1306.2843","is_open_access":true,"published_at":"2013-06-11T05:45:57Z","score":57},{"id":"arxiv_1205.1125","title":"Application Of Data Mining In Bioinformatics","authors":[{"name":"Khalid Raza"}],"abstract":"This article highlights some of the basic concepts of bioinformatics and data mining. The major research areas of bioinformatics are highlighted. The application of data mining in the domain of bioinformatics is explained. It also highlights some of the current challenges and opportunities of data mining in bioinformatics.","source":"arXiv","year":2012,"language":"en","subjects":["cs.CE","cs.DB"],"url":"https://arxiv.org/abs/1205.1125","pdf_url":"https://arxiv.org/pdf/1205.1125","is_open_access":true,"published_at":"2012-05-05T12:19:33Z","score":56},{"id":"arxiv_0911.4230","title":"Introduction to Bioinformatics","authors":[{"name":"Sabu M. Thampi"}],"abstract":"Bioinformatics is a new discipline that addresses the need to manage and interpret the data that in the past decade was massively generated by genomic research. This discipline represents the convergence of genomics, biotechnology and information technology, and encompasses analysis and interpretation of data, modeling of biological phenomena, and development of algorithms and statistics. This article presents an introduction to bioinformatics","source":"arXiv","year":2009,"language":"en","subjects":["cs.CE"],"url":"https://arxiv.org/abs/0911.4230","pdf_url":"https://arxiv.org/pdf/0911.4230","is_open_access":true,"published_at":"2009-11-22T04:07:08Z","score":53}],"total":194682,"page":1,"page_size":20,"sources":["arXiv","DOAJ","CrossRef"],"query":"cs.CE"}